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Groups > linux.debian.kernel > #84955

Bug#1071584: linux-image-6.1.0-21-amd64: power cycle on hypervisor Hyper-V (2016) during bootup

From alphacore@arcor.de
Newsgroups linux.debian.bugs.dist, linux.debian.kernel
Subject Bug#1071584: linux-image-6.1.0-21-amd64: power cycle on hypervisor Hyper-V (2016) during bootup
Date 2024-12-27 07:40 +0100
Message-ID <JYcaR-39vn-1@gated-at.bofh.it> (permalink)
References <IGAnv-eSMW-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

Cross-posted to 2 groups.

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Dear all,

I made the following observation:

I did a fresh install of Linux Mint Debian Edition (LMDE) 6 based on 
Debian Bookworm on my Lifebook S series notebook. It came with kernel 
6.1.0-12, which worked fine. Then it updated to 6.1.0-28 and it booted 
into black screen after the initramfs. I upgraded to the backports 
kernel, which is at 6.11.5 and also upgraded firmware-linux-* from 
default version 20230210-5 to the backports version 20240709-2. Still 
booting into black screen. Removed backports kernel BUT kept backports 
firmware --> et voilà, I could boot the 6.1.0-28  kernel without issues!

The pattern seem like:
Standard kernel + standard firmware = fails
Newer kernel + newer firmware = fails
Standard kernel + newer firmware = works

Or, simpler: If firmware level > kernel level, it works.

Seems like as of 6.1.0-20, some kernel component expects newer firmware 
than it comes with, or there is a bug in a firmware component, and this 
seems to be unfixed throughout kernel 6.11.5. causing various hardware 
related issues like power cycling, booting into UEFI/BIOS instead of the 
OS or into a black screen like mine.

Long story short: Install backports firmware and it should work (in 
theory) as a workaround.

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Bug#1071584: linux-image-6.1.0-21-amd64: power cycle on hypervisor Hyper-V (2016) during bootup m0x7e <xm0x7e@gmail.com> - 2024-05-21 18:20 +0200
  Bug#1071584: linux-image-6.1.0-21-amd64: power cycle on hypervisor Hyper-V (2016) during bootup alphacore@arcor.de - 2024-12-27 07:40 +0100
  Bug#1071584: Re: linux-image-6.1.0-21-amd64: power cycle on hypervisor Hyper-V (2016) during bootup alphacore@arcor.de - 2024-12-28 17:00 +0100
  Bug#1071584: marked as done (linux-image-6.1.0-21-amd64: power  cycle on hypervisor Hyper-V (2016) during bootup) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-02-20 15:50 +0100

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